Yeah I'll give bio silica a try because the Mad Farmer one I use is really alakaline. I have to put it in first when mixing because it's makes things precipitate otherwise.
Silicon is natural and is very abundant in soil. Growers who grow hydroponically should add this to their fertilizer regime as it is absolutely essential IMHO to a great crop. Here's a link that explains very well why you should use Silica. http://dudegrows.com/use-silica-cannabis-garden/
I know this is a super late response, but here are proof of my results after starting use of Hygrozyme and Roots Excelurator. These are before and after two one week!